ViewSonic VG910S - 19" LCD Monitor User manual

Model No. VLCDS27944-3W/-4W
19” Color TFT LCD Display
Service Manual
ViewSonic VG910s/b-1
ViewSonic
381 Brea Canyon Road, Walnut, California 91789 USA - [phone]
(VG910s/b_SM_721 Rev. 1aMar.2004)

Copyright
Copyright
¤
2003by ViewSonic Corporation. All rights reserved. No partof this publication may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written permission of ViewSonic Corporation.
Disclaimer
ViewSonic makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular
purpose. Further, ViewSonic reserves the right to revise this publication and to make changes from time
to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or
changes.
Trademarks
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.
Optiquest is a registered trademark of ViewSonic Corporation.
Revision History
Revision Date Description Of Changes Approval
1a 03/03/04 Initial Release DCN-3605 Angela Luh
i
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

TABLE OF CONTENTS
2. Specification
3. Front Panel Function Control Description
4. Circuit Description
6. Trouble Shooting Flow Chart
9. Block Diagram
10. Schematic Diagrams
7. Recommended Spare Parts List
1. Precautions and Safety Notices
5. Adjusting Procedure
8. Exploded Diagram And Spare Parts List
11. PCB Layout Diagrams
1
2
13
19
20
23
29
47
51
52
62
ii
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

Prior to using this manual, please ensure that you have carefully followed all the procedures outlined in the
user manual for this product.
• Read all of these instructions.
• Save these instructions for later use.
• Follow all warnings and instructions marked on the product.
• Do not use this product near water.
• This display should be installed on a solid horizontal base.
• When cleaning, use only a neutral detergent cleaner with a soft damp cloth. Do not spray with liquid or
aerosol cleaners.
• Do not expose this display to direct sunlight or heat. Hot air may cause damage to the cabinet and other
parts.
• Adequate ventilation must be maintained to ensure reliable and continued operation and to protect the
display from overheating. Do not block ventilation slots and openings with objects or install the display
in a place where ventilation may be hindered.
• Do not install this display near a motor or transformer where strong magnetism is generated. Images on
the display will become distorted and the color irregular.
• Do not allow metal pieces or objects of any kind fall into the display from ventilation holes.
Slots and openings in the cabinet and the back or bottom are provided for ventilation, to ensure reliable
operation of the product and to protect it from overheating, those openings must not be blocked or covered.
The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface.
This product should never be placed near or over a radiator or heat register. This product should not be
placed in a built-in installation unless proper ventilation is provided.
1. Precautions and Safety Notices
1
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

2.1 General Description
Active matrix thin-film-transistor (TFT) Type No: FLC48SXC11V/M190EN02V2
LCD
Fujitsu
FLC48SXC11V
AU
M190EN02V2
Active screen Size
Effective Display Size
Pixel Pitch
Pixel Format
Brightness
Contrast Ratio
Color (8 bits)
Viewing Angle range
(CR≧10, at Ta=25°C)
Backlight
19.0 inches diagonal
376.32mm (H) × 301.056mm (V)
0.294mm (H) × 0.294mm(V)
1280×1024 (SXGA )
250cd/m2(Typ. )
600:1 (Typ.)
16,777,216 colors
Up 85° Down 85°(type)
Left 85° Right 85°(type)
4 CCFL
Input Signals Analog RGB 0.7Vp-p / 75Ω
Digital RGB DVI Ver1.0 (TMDS Single Link)
H/V Separate sync. Sync 2.0~5.0Vp-p, Positive/Negative, 2.2KΩ
Input connector Analog D-sub 15 pin *1
Digital DVI-D 24pin *1
Synchronization Horizontal
Vertical
Non-interlaced
30 kHz to 82 kHz
50 Hz to 85 Hz
Maximum Pixel
Rated 135MHz
(automatically)
(automatically)
Resolution Horizontal
Vertical
1280 dots
1024 lines
Active Display Area Horizontal
Vertical
376.32 mm (typical, panel depends)
301.056 mm (typical, panel depends)
Power Supply
Voltage Rating
AC input
DC 12V
AC 100V~240V / 2A, 47.5~63Hz
5A.
AC Power
Consumption
less than 60W
less than 1W
less than 1W
On mode.
Active OFF mode.
DC Power OFF.
Current Rating AC input 2A @AC 100~240V.
Dimensions
Net
Gross
Depth(head only)
422.4(W) x 382.1(H) x62.0 (D) mm
422.4(W) x 438.48(H) x 180.56(D) mm(With stand base)
180.56mm
Weight Net
Gross
7.5 Kg
10.2Kg
Environmental
Conditions
Operating Temperature
Operating Humidity
Storage Temperature
Storage Humidity
0 to 40°C
20 to 85%
-20 to 60°C
5 to 85% (non-condensation)
Accessories AC cable
User Guide
CD Rom
Warranty Card
HD15 - HD15 cable
DVI(D) - DVI(D) cable
1.8m
English
1
1
1
1
2. Specification
2
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

Regulatory StandardsUL, cUL, FCC-B, CB, CE, EPA, NOM, TUV/GS, TUV ERGO (covers ISO13406-2 &
MPRII), NEMKO, SEMKO, DEMKO, FIMKO, GOST-R + 20 ORIGINAL COPIES
HYGIENIC, PCBC, VCCI, BSMI, CCEE, PSB,C-TICK, TUV-S,TCO'99(VG910b),
TCO'03(VG910s), Energy, Energy Star, PCT, Taiwan Green Mark
Others Tilt Angle 20° up / 5° down
VESA DDC 2B compatible
2.2 Electrical Characteristics
2.2.1 Power Supply
AC Input Voltage AC 100~240V / 47.5~63Hz
Power Consumption：
Less than 60W On mode
Less than 1W Active Off mode
Less than 1W DC power Off
Current Rating 2A @ AC 100~240V
Inrush Current
Less than 50 Amp(peak) for 120 VAC
Less than 100 Amp(peak) for 220 VAC
Power cord：detachable, 3P, 1.8m
2.2.2 LCD
LCD Active matrix thin-film-transistor (TFT)
Active screen size 19.0 inches (376.32mm × 301.056mm) diagonal
Pixel Format 1280 x 1024 (SXGA )
R.G.B. stripe arrangement
Display method TFT, normally Black
Pixel pitch 0.294 (H) x 0.294 (V) mm
Dot number 1280 x 1024 x 3 dots
Backlight Edge-lighting type with 4 CCFL
(Cold Cathode Fluorescent Lamp)
Brightness 250 cd/m2 (Typ.)
Contrast ratio600:1 (Typ.)
Display color 16,777,216 colors
viewing angle typical Up 85° / down 85° / right 85° / left 85°
(Contrast ratio≧10 at Ta=25°C / 77°F)
Response time Rise time 15mS, Fall time 10mS (Typ. at Ta=25°C)
2.2.3 Power Management
VG910 will enter power saving mode under the following conditions:
Power Management condition and status in AC 240V
Signals
State Horizontal Vertical Video
Power
Supply LED
On Pulses Pulses Active <60W Green
Pulse No Pulse
Active off No Pulse Pulse
Blank <1W Amber
No Pulses No Pulses
Out off scan range <30KHz ,
>82KHz
<50Hz ,
>85Hz
- <60W Green
3
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

AC power Off - - - Off Off
DC power Off - - - <1W Off
2.3 Video alignment
2.3.1 COLOR TEMPERATURE ALLIGMENT
a. APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN.( INPUT SIGNAL LEVEL
=0.7Vp-p )
b. AUTO WHITE BANLANCE MUST BE FINISH AT 32 GRAY PATTERN BEFORE AUTO
ALIGNMENT,
c. SET DEFAULT ÆCONTRAST TO 70% , BRIGHTNESS TO 100%
9300°K, 6500°K,：R G B SUB-BRIGHTNESS SET AS BELOW
9300°K 6500°K 5400°K 5000°K
R SUB-BRIGHTNESS 128 128 128 128
G SUB-BRIGHTNESS 128 128 128 128
B SUB-BRIGHTNESS 128 128 128 128
SET BRIGHTNESS = 255, BLACKLEVEL = 255 AT FACTORY DEFAULT.
2.3.2 DIGITAL ALIGNMENT
2.3.2.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN ,
2.3.2.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING CHROMATICITY
SPEC.
x = 0.313 ±0.003 , y = 0.329 ±0.003
2.3.3 ANALOG ALIGNMENT
2.3.3.1 9300°K HIGH LUMINANCE ALIGNMENT
2.3.3.1.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN.
2.3.3.1.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING
CHROMATICITY SPEC.
9300°K →x = 0.283 ±0.003, y = 0.298 ±0.003 , Y > 155 cd/m2
2.3.3.2 6500°K HIGH LUMINANCE ALIGNMENT
2.3.3.2.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN.
2.3.3.2.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING
CHROMATICITY SPEC.
6500°K →x = 0.313±0.003, y = 0.329 ±0.003 , Y > 190 cd/m2
2.3.3.3 5400°K HIGH LUMINANCE ALIGNMENT
2.3.3.3.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN.
2.3.3.3.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING
CHROMATICITY SPEC.
5400°K →x = 0.335 ±0.003, y = 0.350 ±0.003 , Y > 180cd/m2
2.3.3.4 5000°K HIGH LUMINANCE ALIGNMENT
2.3.3.4.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN.
2.3.3.4.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING
CHROMATICITY SPEC.
4
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b
5000°K →x = 0.346 ±0.003, y = 0.359 ±0.003 , Y > 180cd/m2

2.3.4 LUMINANCE TEST
2.3.4.1 SET COLOR Temperature TO 9300°K
APPLY VESA 1280x1024/60Hz , APPLY FULL WHITE PATTERN, ADJUST
OSD BRIGHTNESS = 100%, CONTRAST = 70%.
1. THE LUMINANCE MEASURE SHOULD BE OVER 155cd/m2
2.3.4.2 SET COLOR Temperature TO 6500°K
APPLY VESA 1280x1024 / 60Hz , APPLY FULL WHITE PATTERN, ADJUST
OSD BRIGHTNESS = 100%, CONTRAST = 70%
1. THE BRIGHTNESS MEASURE SHOULD BE OVER 190cd/m2
2. SET BRIGHTNESS =100% , CONTRAST=100% ,THE LUMINANCE
MEASURE SHOULD BE OVER 220cd/m2
2.3.4.3 SET COLOR Temperature TO 5400°K
APPLY VESA 1280x1024 / 60Hz , APPLY FULL WHITE PATTERN, ADJUST
OSD BRIGHTNESS = 100%, CONTRAST = 70%
1. THE BRIGHTNESS MEASURE SHOULD BE OVER 180cd/m2
2.3.4.4 SET COLOR Temperature TO5000°K
APPLY VESA 1280x1024 / 60Hz , APPLY FULL WHITE PATTERN, ADJUST
OSD BRIGHTNESS = 100%, CONTRAST = 70%
1. THE BRIGHTNESS MEASURE SHOULD BE OVER 180 cd/m2
2.3.4.5 APPLY VESA 1280x1024/60Hz , APPLY FULL WHITE PATTERN, ADJUST
OSD BRIGHTNESS 100%, CONTRAST 70% ,
MEASUREMENT AT CENTER OF SCREEN
MODE X y Y
9300°K 0.283±0.010 0.298 ±0.010 OVER 155 cd/m2
6500°K 0.313 ±0.010 0.329 ±0.010 OVER190 cd/m2
5400°K 0.335 ±0.010 0.350 ±0.010 OVER 180 cd/m2
5000°K 0.346 ±0.010 0.359 ±0.010 OVER 180 cd/m2
5
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

○○ ○Read EDID
2.4 Key function define
Key
“Vol -”
Key
“Vol +” Key “1”
Key
“DOWN
”
Key
“UP” Key “2” power functions
○○ ○Factory mode
○○
○Burn in off
○○○Burn in on
○○○All mode recall
○○
Lock(Unlock)
Power Key
○○
Lock(Unlock)
Osd Key
6
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

2.5 EDID SERIAL NO. FORMAT
2.5.1 EDID for VG910s
2.5.1.1 Analog EDID
128 BYTES OF EDID CODE:
0 1 2 3 4 5 6 7 8 9
0 00 FF FF FF FF FF FF 00 5A 63
10 18 DA 01 01 01 01 01 0D 01 03
20 0E 26 1E 78 2E 5E 35 A4 59 4A
30 98 25 10 50 54 BF EF 80 81 80
40 81 40 71 4F 01 01 01 01 01 01
50 01 01 01 01 30 2A 00 98 51 00
60 2A 40 30 70 13 00 78 2D 11 00
70 00 1E 00 00 00 FF 00 41 33 31
80 30 33 30 31 30 30 30 30 31 0A
90 00 00 00 FD 00 32 4B 1E 52 0E
100 00 0A 20 20 20 20 20 20 00 00
110 00 FC 00 56 47 39 31 30 73 0A
120 20 20 20 20 20 20 00 7B
2.5.1.2 Digital EDID
128 BYTES OF EDID CODE:
0 1 2 3 4 5 6 7 8 9
0 00 FF FF FF FF FF FF 00 5A 63
10 18 DA 01 01 01 01 01 0D 01 03
20 80 26 1E 78 2E 5E 35 A4 59 4A
30 98 25 10 50 54 BF EF 80 81 80
40 81 40 71 4F 31 0A 01 01 01 01
50 01 01 01 01 30 2A 00 98 51 00
60 2A 40 30 70 13 00 78 2D 11 00
70 00 1E 00 00 00 FF 00 41 33 31
80 30 33 30 31 30 30 30 30 31 0A
90 00 00 00 FD 00 32 4B 1E 52 0E
100 00 0A 20 20 20 20 20 20 00 00
110 00 FC 00 56 47 39 31 30 73 0A
120 20 20 20 20 20 20 00 D0
7
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

2.5.2 EDID for VG910b
2.5.2.1 Analog EDID
128 BYTES OF EDID CODE:
0 1 2 3 4 5 6 7 8 9
0 00 FF FF FF FF FF FF 00 5A 63
10 18 DB 01 01 01 01 01 0D 01 03
20 0E 26 1E 78 2E 5E 35 A4 59 4A
30 98 25 10 50 54 BF EF 80 81 80
40 81 40 71 4F 01 01 01 01 01 01
50 01 01 01 01 30 2A 00 98 51 00
60 2A 40 30 70 13 00 78 2D 11 00
70 00 1E 00 00 00 FF 00 41 33 32
80 30 33 30 31 30 30 30 30 31 0A
90 00 00 00 FD 00 32 4B 1E 52 0E
100 00 0A 20 20 20 20 20 20 00 00
110 00 FC 00 56 47 39 31 30 62 0A
120 20 20 20 20 20 20 00 8A
2.5.2.2 Digital EDID
128 BYTES OF EDID CODE:
0 1 2 3 4 5 6 7 8 9
0 00 FF FF FF FF FF FF 00 5A 63
10 18 DB 01 01 01 01 01 0D 01 03
20 80 26 1E 78 2E 5E 35 A4 59 4A
30 98 25 10 50 54 BF EF 80 81 80
40 81 40 71 4F 31 0A 01 01 01 01
50 01 01 01 01 30 2A 00 98 51 00
60 2A 40 30 70 13 00 78 2D 11 00
70 00 1E 00 00 00 FF 00 41 33 32
80 30 33 30 31 30 30 30 30 31 0A
90 00 00 00 FD 00 32 4B 1E 52 0E
100 00 0A 20 20 20 20 20 20 00 00
110 00 FC 00 56 47 39 31 30 62 0A
120 20 20 20 20 20 20 00 DF
8
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

APPENDIX A : PRESET TIMING CHART
Analog Mode
1 2 3 4 5 6 7
Signal name symbol TEXT
mode
TEXT
mode VGA MAC-II VESA-VGA VESA-VGA VESA-VGA
H-frequency (kHz) 31.468 31.469 31.468 35.001 37.5 37.862 43.269
V-frequency (Hz) 70.087 70.087 59.941 66.667 75 72.807 85.005
Pixel rate (MHz) 25.175 28.322 25.175 30.240 31.5 31.501 36.000
H-sync Ths
96 108 96 64 64 40 56
H-back porch Thb 48 54 48 96 120 128 80
Count num (H-total) Thd 800 900 800 864 840 832 832
H- front porch Thf 16 18 16 64 16 24 56
V-sync Tvs
2 2 2 3 3 3 3
V-back porch Tvb 60 35 33 39 16 28 25
Count num (V-total) Tvd 449 449 525 525 500 520 509
V-front porch Tvf 37 12 10 3 1 9 1
H-sync. Polarity Positive Negative Negative Negative Negative Negative Negative
V-sync Polarity Negative Positive Negative Negative Negative Negative Negative
H-resolution (dots) 640 720 640 640 640 640 640
V-resolution (lines) 350 400 480 480 480 480 480
8 9 10 11 12 13 14
Signal name Symbol IBM-8514
A SVGA SVGA SVGA SVGA MAC 16" XGA
H-frequency (kHz) 35.156 37.879 48.077 46.875 53.674 49.725 48.363
V-frequency (Hz) 56.250 60.317 72.188 75.000 85.061 74.5 60.004
Pixel rate (MHz) 36.000 40.000 50.000 49.500 56.250 57.283 65.000
H-sync Ths 72 128 120 80 64 64 136
H-back porch Thb 128 88 64 160 152 224 160
Count num (H-total) Thd 1024 1056 1040 1056 1048 1152 1344
H- front porch Thf 24 40 56 16 32 32 24
V-sync Tvs 2 4 6 3 3 3 6
V-back porch Tvb 22 23 23 21 27 39 29
Count num (V-total) Tvd 625 628 666 625 631 667 806
V-front porch Tvf 1 1 37 1 1 1 3
H-sync. Polarity Negative Positive Positive Positive Positive Negative Negative
V-sync Polarity Negative Positive Positive Positive Positive Negative Negative
H-resolution (dots) 800 800 800 800 800 832 1024
V-resolution (lines) 600 600 600 600 600 624 768
9
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

H-frequency (kHz) 56.476 58.099 60.023 68.677 63.981 45.000 79.976
V-frequency (Hz) 70.069 72.082 75.029 84.997 60.02 60.00 75.025
Pixel rate (MHz) 75.000 78.084 78.750 94.500 108 74.250 135
H-sync Ths 136 136 96 96 112 40 144
H-back porch Thb 144 160 176 208 248 270 248
Count num
(H-total)
Thd 1328 1344 1312 1376 1688 1658 1688
H- front porch Thf 24 24 16 48 48 60 16
V-sync Tvs 6 6 3 3 3 5 3
V-back porch Tvb 29 29 28 36 38 20 38
Count num
(V-total)
Tvd 806 806 800 808 1066 750 1066
V-front porch Tvf 3 3 1 1 1 5 1
H-sync. Polarity Negative Negative Positive Positive Positive Negative Positive
V-sync Polarity Negative Negative Positive Positive Positive Negative Positive
H-resolution (dots) 1024 1024 1024 1024 1280 1280 1280
V-resolution (lines) 768 768 768 768 1024 720 1024
Notes: Because this model no support FRC and in order to meet the panel spec of vertical frequency,
some timing can not full screen in vertical size.
Ex:640x400/70Hz;640x350/70Hz ;720x400/70Hz ;640x480/85Hz;800x600/85Hz;
1024x768/85Hz.
15 16 17 18 19 20 21
Signal name Symbol XGA XGA XGA XGA SXGA 720P SXGA
10
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

Digital Mode
1 2 3 4 5 6 7
Signal name symbol TEXT
mode
TEXT
mode VGA VGA VESA-VGA VESA-VGA VESA-VGA
H-frequency (kHz) 31.468 31.469 31.468 31.468 37.5 37.862 43.269
V-frequency (Hz) 70.087 70.087 70.000 59.941 75 72.807 85.005
Pixel rate (MHz) 25.175 28.322 25.175 25.175 31.5 31.501 36.000
H-sync Ths 96 108 96 96 64 40 56
H-back porch Thb 48 54 48 48 120 128 80
Count num (H-total) Thd 800 900 800 800 840 832 832
H- front porch Thf 16 18 16 16 16 24 56
V-sync Tvs 2 2 2 2 3 3 3
V-back porch Tvb 60 35 35 33 16 28 25
Count num (V-total) Tvd 449 449 449 525 500 520 509
V-front porch Tvf 37 12 10 6 1 9 1
H-sync. Polarity Positive Negative Negative Negative Negative Negative Negative
V-sync Polarity Negative Positive Negative Negative Negative Negative Negative
H-resolution (dots) 640 720 640 640 640 640 640
V-resolution (lines) 350 400 400 480 480 480 480
8 9 10 11 12 13 14
Signal name Symbo
l
IBM-8514A SVGA SVGA SVGA SVGA XGA XGA
H-frequency (kHz) 35.156 37.879 48.077 46.875 53.674 48.363 56.476
V-frequency (Hz) 56.250 60.317 72.188 75.000 85.061 60.004 70.069
Pixel rate (MHz) 36.000 40.000 50.000 49.500 56.250 65.000 75.000
H-sync Ths 72 128 120 80 64 136 136
H-back porch Thb 128 88 64 160 152 160 144
Count num (H-total) Thd 1024 1056 1040 1056 1048 1344 1328
H- front porch Thf 24 40 56 16 32 24 24
V-sync Tvs 2 4 6 3 3 6 6
V-back porch Tvb 22 23 23 21 27 29 29
Count num (V-total) Tvd 625 628 666 625 631 806 806
V-front porch Tvf 1 1 37 1 1 3 3
H-sync. Polarity Negative Positive Positive Positive Positive Negative Negative
V-sync Polarity Negative Positive Positive Positive Positive Negative Negative
H-resolution (dots) 800 800 800 800 800 1024 1024
V-resolution (lines) 600 600 600 600 600 768 768
11
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

H-frequency (kHz) 58.099 60.023 68.677 63.981 45.000
V-frequency (Hz) 72.082 75.029 84.997 60.02 60.00
Pixel rate (MHz) 78.084 78.750 94.500 108 74.250
H-sync Ths 136 96 96 112 40
H-back porch Thb 160 176 208 248 270
Count num (H-total) Thd 1344 1312 1376 1688 1658
H- front porch Thf 24 16 48 48 60
V-sync Tvs 6 3 3 3 5
V-back porch Tvb 29 28 36 38 20
Count num (V-total) Tvd 806 800 808 1066 750
V-front porch Tvf 3 1 1 1 5
H-sync. Polarity Negative Positive Positive Positive Negative
V-sync Polarity Negative Positive Positive Positive Negative
H-resolution (dots) 1024 1024 1024 1280 1280
V-resolution (lines) 768 768 768 1024 720
Notes: Because this model no support FRC and in order to meet the panel spec of vertical frequency,
some timing can not full screen in vertical size.
Ex:640x400/70Hz;640x350/70Hz ;720x400/70Hz ;640x480/85Hz;800x600/85Hz;
1024x768/85Hz.
15 16 17 18 19
Signal name Symbol XGA XGA XGA SXGA HD-720P
12
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

Adjusting the Screen Image:
Use the buttons on the front control panel to display and adjust the OnView®
controls which display on the screen. The OnView controls are explained at the
top of the next page and are defined in “Main Menu Controls” on page 9.
Scrolls through menu options and
adjusts the displayed control.
Also a shortcut to display the
Contrast adjustment control
screen.
Power
On/Off
Displays the control
screen for the highlighted
control.
Also toggles between two
controls on some
screens.
Also a shortcut to toggle
between analog and
digital connections.
Power light
Green = ON
Orange = Power
Saving
Main Menu with OnView controls
Front Control Panel shown
below
Audio Mute button
turns the sound off.
Displays the Main Menu
or exits the control screen
and saves adjustments
Decreases or
increases volume
Speaker Speaker
3. Front Panel Function Control Description
13
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

Do the following toadjust the screen image:
1To display the Main Menu, press button [1].
NOTE: All OnView menus and adjustment screens disappear automatically
after about 30 seconds.
2To select a control you want to adjust, press ▲or ▼to scroll up or down the
Main Menu.
3After the control is selected, press button [2]. A control screen like the one
shown below appears.
4To adjust the control, press the up ▲or down ▼buttons.
5To save the adjustments and exit the menu, press button [1] twice.
The following tipsmayhelp you optimizeyourdisplay:
• Adjust your computer's graphic card so that it outputs a video signal 1280 x
1024 @ 60 Hz to the LCD display. (Look for instructions on "changing the
refresh rate" in your graphic card's user guide.)
• If necessary, make small adjustments using H POSITION and V POSITION
until the screen image is completely visible. (The black border around the
edge of the screen should barely touch the illuminated "active area" of the
LCD display.)
The ▼down
arrow decreases,
▲up arrow
increases
The line at the
bottom of the
screen tells you
what you can do
next: Exit or select
the Brightness
control.
14
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

Main Menu Controls
Adjust the menu items shown below by using the up ▲ and down ▼ buttons.
ControlExplanation
Auto Image Adjust automatically sizes, centers, and fine tunes
the video signal to eliminate waviness and distortion.
Press the [2] button to obtain a sharper image.
NOTE: Auto Image Adjust works with most common video
cards. If this function does not work on your LCD display, then
lower the video refresh rate to 60 Hz and set the resolution to its
pre-set value.
Contrast adjusts the difference between the image background
(black level) and the foreground (white level).
Brightness adjusts background black level of the screen image.
Audio Adjust
Volume increases the volume, decreases the volume, and mutes
the audio.
Balance adjusts the proportion of sound coming from each
speaker.
Bass adjusts the low (bass) frequency audio output.
Treble adjusts the high (treble) frequency audio output.
Mute temporarily silences audio output.
15
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

Color Adjust provides several color adjustment modes: preset
color temperatures and RGB which allows you to adjust red (R),
green (G), and blue (B) separately. The factory setting for this
product is 6500K (6500 Kelvin).
9300K — Adds blue to the screen image for cooler white (used
in most office settings with fluorescent lighting).
6500K — Adds red to the screen image for warmer white and
richer red.
5400K — Adds green to the screen image for a darker color.
5000K — Adds blue and green to the screen image for a darker
color.
User Color — Individual adjustments for red (R), green (G),
and blue (B).
1To select color (R, G or B) press button [2].
2To adjust selected color, press ▲or ▼.
Important: If you select RECALL from the Main Menu when
the product is set to a Preset Timing Mode, colors return to the
6500K factory preset.
ControlExplanation
sRGB —sRGB is quickly becoming the industry standard for
color management, with support being included in many of the
latest applications. Enabling this setting allows the LCD display
to more accurately display colors the way they were originally
intended. Enabling the sRGB setting will cause the Contrast and
Brightness adjustments to be disabled.
16
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b

Information displays the timing mode (video signal input)
coming from the graphics card in your computer. See your
graphic card’s user guide for instructions on changing the
resolution and refresh rate (vertical frequency).
NOTE: VESA 1280 x 1024 @ 60 Hz (recommended) means
that the resolution is 1280 x 1024 and the refresh rate is 60
Hertz.
Manual Image Adjust displays the Manual Image Adjust menu.
The Manual Image Adjust controls are explained below:
Horizontal Size adjusts the width of the screen image.
Horizontal Position moves the screen image left or right.
Vertical Position moves the screen image up or down.
Fine Tune sharpens focus by aligning the illuminated text and/
or graphic characters.
Sharpness adjusts the clarity and focus of the screen image.
ControlExplanation
17
ViewSonic CorporationConfidential
-
Do Not Copy VG910s/b